Offering 40 lumens and tool free handlebar-strap fitting, the Whitebeam headlight is the perfect value conscious light for an urban environment. Key Features • Max Output 40Lm • Runtime 40-70hrs • 1 x high-power LED • 270° visibility • 3 x AAA batteries (included) • Universal handlebar strap included Modes & Runtime Constant: 40hrs Flash: 70hrs